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Earthquake Hazards Program

Theoretical P-Wave Travel Times

Sunday, January 16, 2005 at 20:17:52 UTC

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver

Theoretical P-wave Travel Times

This map shows the predicted (theoretical) travel times, in minutes, of the compressional (P) wave from the earthquake location to points around the globe. The travel times are computed using the spherically-symmetric IASP91 reference earth velocity model. The heavy black lines shown are the approximate distances to the P-wave shadow zone (103 to 140 degrees).

Theoretical P-Wave Travel Times
City Distance
Travel Time
Arrival Time
Agana, Guam 4.63 1:07.320:19:03.3Pn
Tokyo, Japan 24.62 5:15.120:23:11.1P
Beijing, China 36.02 6:55.720:24:51.7P
Brisbane, Australia 40.01 7:29.320:25:25.3P
Kathmandu, Nepal 54.48 9:21.820:27:17.8P
Honolulu, Hawaii 59.57 9:57.820:27:53.8P
Wellington, New Zealand 60.6910:05.520:28:01.5P
Anchorage, Alaska 70.5511:09.220:29:05.2P
Seattle, Washington 86.5812:37.220:30:33.2P
Moscow, Russia 88.2812:45.420:30:41.4P
San Francisco, California 88.6912:47.320:30:43.3P
Los Angeles, California 92.8813:06.820:31:02.8P
Bergen, Norway 100.5913:41.520:31:37.5Pdiff
Golden, Colorado 100.8513:42.620:31:38.6Pdiff
Albuquerque, New Mexico 101.6313:46.120:31:42.1Pdiff
Nairobi, Kenya 103.9313:56.320:31:52.3Pdiff
Duluth, Minnesota 105.6714:04.020:31:60.0Pdiff
Wichita, Kansas 107.2314:10.920:32:06.9Pdiff
Rome, Italy 109.1914:19.620:32:15.6Pdiff
London, England 109.2314:19.820:32:15.8Pdiff
St. Louis, Missouri 111.4814:29.820:32:25.8Pdiff
Brownsville, Texas 112.5314:34.520:32:30.5Pdiff
Mexico City, Mexico 113.7014:39.720:32:35.6Pdiff
Ottawa, Canada 114.9714:45.320:32:41.3Pdiff
Knoxville, Tennessee 116.3514:51.420:32:47.4Pdiff
Bangor, Maine 118.4115:00.620:32:56.6Pdiff
Washington, D.C. 119.1815:04.020:32:60.0Pdiff
New York, New York 119.3815:04.920:33:00.9Pdiff
Philadephia, Pennsylvania 119.3815:04.920:33:00.9Pdiff
Boston, Massachusetts 119.4715:05.320:33:01.3Pdiff
Palmer Station, Antarctica 120.9115:11.620:33:07.6Pdiff
Miami, Florida 125.9615:34.120:33:30.1Pdiff
San Juan, Puerto Rico 140.5116:38.620:34:34.6Pdiff
Lima, Peru 142.9416:49.520:34:45.5Pdiff

Travel Time Information and Calculator


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